code: def test_fast_slow_arg_function_basic():
      def func1():
          return 1
  
      assert _fast_arg(func1)() == _slow_arg(func1)() == 1
  
      def func2(x, y):
          return x + y
  
      assert _fast_arg(func2)(1, 2) == _slow_arg(func2)(1, 2) == 3
  
imports: import inspect
  from functools import partial
  from io import StringIO
  import numpy
  import pytest
  from cudf.pandas.fast_slow_proxy import _fast_arg, _FunctionProxy, _slow_arg, _transform_arg, _Unusable, make_final_proxy_type, make_intermediate_proxy_type
label_desc: Use image node_id 4 for calling a global function with example usage: test_fast_slow_arg_function_basic() and returns: int, unknown